package com.atguigu.gulimall.gulimallware.config;

import org.springframework.amqp.core.Binding;
import org.springframework.amqp.core.Exchange;
import org.springframework.amqp.core.Queue;
import org.springframework.amqp.core.TopicExchange;
import org.springframework.amqp.support.converter.Jackson2JsonMessageConverter;
import org.springframework.amqp.support.converter.MessageConverter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.lang.Nullable;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

@Configuration
public class MyRabbitConfig {
    @Bean
    public MessageConverter messageConverter(){
        return new Jackson2JsonMessageConverter();
    }
    @Bean
    public Exchange stockEventExchange(){

      return   new TopicExchange("stock-event-exchange",true,false);
    }

    /**
     * 延迟队列，处理死信队列传递过来的数据
     * @return
     */
    @Bean
    public Queue stockReleaseStockQueue(){
        return new Queue("stock.release.stock.queue",true,false,false);
    }
    @Bean
    public Queue stockDelayQueue(){
        Map<String, Object> arguments = new HashMap<>();
        arguments.put("x-dead-letter-exchange","stock-event-exchange");
        arguments.put("x-dead-letter-routing-key","stock.release");
        arguments.put("x-message-ttl", TimeUnit.MINUTES.toMillis(2));

        return new Queue("stock.delay.queue",true,false,false,arguments);
    }
    @Bean
    public Binding stockReleaseBinding(){
        return  new Binding("stock.release.stock.queue", Binding.DestinationType.QUEUE,"stock-event-exchange","stock.release.#",null);
    }
    @Bean
    public Binding stockDelayBinding(){
        return  new Binding("stock.delay.queue", Binding.DestinationType.QUEUE,"stock-event-exchange","stock.locked",null);
    }

}
